202023年第1期（总第165期）高效液相色谱法同时测定复合膜袋中苯代三聚氰胺及二种二苯甲酮化合物的含量张涛，曾莉*，林黛琴，聂绍丽（江西省检验检测认证总院工业产品检验检测院，江西南昌，330052）摘要：本文建立了高效液相色谱法同时测定复合膜袋中苯代三聚氰胺、2,4-二羟基二苯甲酮和2-羟基-4-甲氧基二苯甲酮残留量的方法。试样剪成小于2mm的碎片，经甲醇超声提取，氮气浓缩至干，再用2mL流动相超声溶解，经0.45μm滤膜过滤后，采用液相色谱（配PDA检测器）进行检测，外标法定量。研究表明：在0.05~10.0mg/L的范围内，各标准物质线性关系良好，相关系数（r）均大于0.9995，方法检出限低，回收率在88.60%~112.32%，相对标准偏差（RSD）在0.09%~3.05%之间，方法精密度较好。该方法简便快捷，结果准确可靠，时效性高。关键词：复合膜袋；苯代三聚氰胺；2,4-二羟基二苯甲酮；2-羟基-4-甲氧基二苯甲酮；残留量中图分类号：O657文献标志码：A文章编号：1008-3103（2023）01-0020-04SimultaneousDeterminationofBenzonquanmineandTwoBenzophenoneCompoundsinCompositeMembraneBagsbyHigh-performanceLiquidChromatographyZhangTao,ZengLi*,LinDai-qin,NieShao-li（JiangxiGeneralInstituteofTestingandCertificationInstituteofInspectionandTestingforIndustrialProducts,NanchangJiangxi330052,China）Abstract：AHigh-performanceliquidchromatographymethodwasdevelopedforthesimultaneousdeterminationoftheresiduesofbenzonquanmine,2,4-dihydroxybenzophenoneand2-hydroxy-4-methoxybenzophenoneincompositemembranebags.Thesamplewascutintofragmentssmallerthan2mm,extractedbyultrasonicwithmethanol,concentratedtodrywithnitrogen,thendissolvedbyultrasonicwith2mLmobilephase,filteredby0.45μmfiltermembrane,detectedbyliquidchromatography（withPDAdetector）andquantifiedbyexternalstandardmethod.Theresultsshowedthatintheconcentrationrangeof0.05~10.0mg/L,thelinearrelationshipofthestandardsubstancesweregood,andthecorrelationcoefficient（R）weregreaterthan0.9995.Thedetectionlimitofthemethodwerelow,andtherecoveriesrangedfrom88.60%to112.32%withtherelativestandarddeviation（RSD）of0.09%~3.05%,andtheprecisionofthemethodweregood.Themethodissimple,rapid,accurateandreliablewithhightimeliness.Keywords...
